关键词: 高速轧辊磨床, 液体动静压轴承, 优化设计, 遗传算法

Abstract:

The performances  of liquid hybrid bearing affect directly grinding performances of the whole roll grinder.Aiming at a kind of adjustable liquid hybrid bearing in grinding head of high-speed roll  grinder,its structural characteristics and working principles were  analyzed, and its structural dimensions and working parameters  were  calculated.Then,the lowest total power loss per unit loading capacity was regarded as an objective function of optimization design, and optimization design of the bearing was performed  based on genetic algorithm.Optimization results are as follows:objective  function value decreases from 0.0808  to  0.0678,total power loss of the bearing decreases from 766.9W to 642.6W,and  power consumption is reduced about 16%;moreover,structural dimensions of the bearing are reduced,and its stiffness is obviously  improved.Therefore,through the optimization design,manufacturing cost of the bearing is reduced,and  its comprehensive performances are improved obviously.

Key words: high-speed , roll grinder;liquid , hybrid , bearing;optimization design;genetic algorithm